PCS3I2191A PulseCore Semiconductor, PCS3I2191A Datasheet

PCS3I2191A

Manufacturer Part Number

PCS3I2191A

Description

Spread Spectrum Clock Generator

Manufacturer

PulseCore Semiconductor

Datasheet

1.PCS3I2191A.pdf (8 pages)

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CLKIN / XIN

April 2007

rev 0.2

Block Diagram

Features

•

Product Description

PCS3P2191A is a versatile spread spectrum frequency

modulator that generates four low EMI 4x clocks at the

XOUT

Generates four 4X low EMI spread spectrum clocks

Input frequency: 15MHz

Output frequency: 60MHz

Internal loop filter minimizes external components

Selectable Centre Spread frequency deviation:

± 1.25%, ± 1.5%, ± 1.75% ± 2.0%

3.3V ± 0.3V Operating Voltage

Commercial and Industrial temperature range

16-pin TSSOP Package

Advanced low power CMOS process

and board space

±0.5%, ±0.75%, ± 1.0%,

1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

Oscillator

Crystal

Notice: The information in this document is subject to change without notice.

Frequency

Feedback

Spread Spectrum Clock Generator

Divider

PulseCore Semiconductor Corporation

www.pulsecoresemi.com

Modulation

Detector

Phase

output. PCS3P2191A offers seven selectable centre

spread options of ±0.5% to ±2.0%, and a no spread

option. (Refer Spread Deviation Selection Table).

PCS3P2191A

(EMI) at the clock source, allowing system wide reduction

of EMI of all clock dependent signals. The PCS3P2191A

allows significant system cost savings by reducing the

number of circuit board layers, ferrite beads, and

shielding that are traditionally required to pass EMI

regulations. The PCS3P2191A uses the most efficient

and optimized modulation profile approved by the FCC

and is implemented in a proprietary all digital method.

The Device is available in 16 Pin TSSOP package, in

Commercial and Industrial temperature range.

Application

PCS3P2191A is targetted for LCD panel application

GND

VDD

Loop

Filter

reduces

VCO

electromagnetic

PLL

PCS3P2191A

Output

Divider

www.DataSheet4U.com

interference

ModOUT

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